TypeError when creating Datasource Plugin with Grafana Toolkit

Grafana Plugin Development
1

Hello,

I am trying to create a new Datasource Plugin by using the @grafana/toolkit as described there, to test it with the newly-released Grafana 7.0. The first three steps work as expected, however running yarn dev throws a TypeError as shown below:

Anmerkung 2020-05-19 095135
Anmerkung 2020-05-19 0951351324×1020 88.5 KB

After googling the error, many posts such as this one in SO suggested deleting node_modules, adding "react-scripts": "^3.4.0" as a dependency, and running yarn install and yarn dev again. However, the problem continued persisting.

I have yarn 1.22.4 running on a Windows 10 machine, with WebStorm as my main IDE. I was also able to use @grafana/toolkit as suggested a couple of months ago (either the 6.7.2 or the 6.7.3 version) and it was building without any issues.

Thanks in advance for the help. Best,
A.

2

I believe this is an issue with the Powershell/Windows command-line. Check out the answer in this post.

3

There’s a change in the 7.0.0 release version of toolkit that should fix this issue (does for me anyway), so just double check that you have that version of toolkit

4

It was set to “next” in package.json when I tested it yesterday, so I assume it was the 7.0.0. However, since the code looked different from the commit in the Git issue you linked, I set it to 7.0.0 manually, deleted node_modules and and ran yarn install again; it was then fine.